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1. Underestimation of Pearson’s product moment correlation statistic

Author:
Humphreys, Rosalind K.; Puth, Marie-Therese; Neuhäuser, Markus; Ruxton, Graeme D.
Source:
Oecologia 2019 v.189 no.1 pp. 1-7
ISSN:
0029-8549
Subject:
correlation,   etc   ; bias; estimation; population; sampling;     Show all 5 Subjects
Abstract:
... Pearson’s product moment correlation coefficient (more commonly Pearson’s r) tends to underestimate correlations that exist in the underlying population. This phenomenon is generally unappreciated in studies of ecology, although a range of corrections are suggested in the statistical literature. The use of Pearson’s r as the classical measure for correlation is widespread in ecology, where manipul ...
DOI:
10.1007/s00442-018-4233-0

2. Line mesh distributions: an alternative approach for multivariate environmental extremes

Author:
Bardsley, Earl; Vetrova, Varvara; Dao, Ngoc Hieu
Source:
Stochastic environmental research and risk assessment 2019 v.33 no.2 pp. 633-643
ISSN:
1436-3240
Subject:
correlation,   etc   ; multivariate analysis; probability; statistical models;     Show all 4 Subjects
Abstract:
... Copulas and other multivariate models can give joint exceedance probabilities for multivariate events in the natural environment. However, the choice of the most appropriate multivariate model may not always be evident in the absence of knowledge of dependence structures. A simple nonparametric alternative is to approximate multivariate dependencies using “line mesh distributions”, introduced here ...
DOI:
10.1007/s00477-018-1642-x

3. Stability of motor bias in the domestic dog, Canis familiaris

Author:
Wells, Deborah L.; Hepper, Peter G.; Milligan, Adam D.S.; Barnard, Shanis
Source:
Behavioural processes 2018 v.149 pp. 1-7
ISSN:
0376-6357
Subject:
correlation,   etc   ; dogs; females; males;     Show all 4 Subjects
Abstract:
... This study explored the relationship between four measures of canine paw preference to establish whether the distribution, direction or strength of motor bias was consistent between tasks. Thirty-two dogs had their paw preferences tested using the Kong ball, tape, lift paw and First-stepping tests. A smaller sample were re-tested 6 months later. The distribution of the dogs’ paw preferences was no ...
DOI:
10.1016/j.beproc.2018.01.012

4. Structure, Dynamics, and Composition of Large Clusters in Polyelectrolyte–Surfactant Systems

Author:
Hoffmann, Ingo; Simon, Miriam; Bleuel, Markus; Falus, Peter; Gradzielski, Michael
Source:
Macromolecules 2019 v.52 no.6 pp. 2607-2615
ISSN:
1520-5835
Subject:
fluorescence correlation spectroscopy,   etc   ; anionic surfactants; electrolytes; light scattering; neutron diffraction;     Show all 5 Subjects
Abstract:
... Mixtures of oppositely charged polyelectrolyte (PE) and surfactant show rich structural behavior. The dynamics of such self-assembled structures can be quite complex. For example, using dynamic light scattering (DLS), we observed a slow collective relaxation mode for mixtures of the cationically charged PE JR 400 and the anionic surfactant SDS if the concentration of the system is sufficiently hig ...
DOI:
10.1021/acs.macromol.8b02611

5. Global chronostratigraphical correlation table for the last 2.7 million years, version 2019 QI-500

Author:
Cohen, K.M.; Gibbard, P.L.
Source:
Quaternary international 2019
ISSN:
1040-6182
Subject:
correlation,   etc   ; Cenozoic era; drilling; geophysics; isotopes; magnetism; Eastern European region;     Show all 7 Subjects
Abstract:
... A substantially updated version of the correlation table showing chronostratigraphical subdivisions of late Cenozoic geological time, spanning the last 2.7 million years is presented. It provides scientists, students, professionals and the general public with a ready reference to stratigraphical terms and schemes in use in different areas for similar periods. The updates comprised the status of Qu ...
DOI:
10.1016/j.quaint.2019.03.009

6. Three-State DNA Hairpin Conformational Dynamics Revealed by Higher-Order Fluorescence Correlation Spectroscopy

Author:
Abdollah-Nia, Farshad; Gelfand, Martin P.; Van Orden, Alan
Source:
TheJournal of physical chemistry 2019 v.123 no.7 pp. 1491-1504
ISSN:
1520-5207
Subject:
fluorescence correlation spectroscopy,   etc   ; DNA; fluorescence; physical chemistry; temperature;     Show all 5 Subjects
Abstract:
... Previous fluorescence correlation spectroscopy (FCS) measurements of DNA hairpin folding dynamics revealed at least three conformational states of the DNA are present, distinguished by the brightness of fluorescent dye-quencher labels. Rapid fluctuations between two of the states occurred on time scales observable by FCS. A third state that was static on the FCS time scale was also observed. In th ...
DOI:
10.1021/acs.jpcb.8b10703

7. Joint second-order parameter estimation for spatio-temporal log-Gaussian Cox processes

Author:
Siino, Marianna; Adelfio, Giada; Mateu, Jorge
Source:
Stochastic environmental research and risk assessment 2018 v.32 no.12 pp. 3525-3539
ISSN:
1436-3240
Subject:
correlation,   etc   ; earthquakes; models; normal distribution;     Show all 4 Subjects
Abstract:
... We propose a new fitting method to estimate the set of second-order parameters for the class of homogeneous spatio-temporal log-Gaussian Cox point processes. With simulations, we show that the proposed minimum contrast procedure, based on the spatio-temporal pair correlation function, provides reliable estimates and we compare the results with the current available methods. Moreover, the proposed ...
DOI:
10.1007/s00477-018-1579-0

8. Correction to: Energetic trade-offs and feedbacks between behavior and metabolism influence correlations between pace-of-life attributes

Author:
Salzman, TimothyC.; McLaughlin, AllisonL.; Westneat, DavidF.; Crowley, PhilipH.
Source:
Behavioral ecology and sociobiology 2018 v.72 no.5 pp. 76
ISSN:
0340-5443
Subject:
correlation,   etc   ; energy; equations; metabolism; models;     Show all 5 Subjects
Abstract:
... Equation 3 of the original published version of this article was incorrect. Correct presentation is given below. ...
DOI:
10.1007/s00265-018-2491-9

9. Effects of air-sea interaction on extended-range prediction of geopotential height at 500 hPa over the northern extratropical region

Author:
Wang, Xujia; Zheng, Zhihai; Feng, Guolin
Source:
Theoretical and applied climatology 2018 v.132 no.1-2 pp. 31-40
ISSN:
0177-798X
Subject:
correlation,   etc   ; climate; models; prediction; China;     Show all 5 Subjects
Abstract:
... The contribution of air-sea interaction on the extended-range prediction of geopotential height at 500 hPa in the northern extratropical region has been analyzed with a coupled model form Beijing Climate Center and its atmospheric components. Under the assumption of the perfect model, the extended-range prediction skill was evaluated by anomaly correlation coefficient (ACC), root mean square error ...
DOI:
10.1007/s00704-017-2071-3

10. Slight variations of breech face marks and firing pin impressions over 3070 consecutive firings evaluated by Evofinder®

Author:
Zhang, Kaifeng; Luo, Yaping
Source:
Forensic science international 2018 v.283 pp. 85-93
ISSN:
0379-0738
Subject:
correlation,   etc   ; automation; databases; protective clothing;     Show all 4 Subjects
Abstract:
... To investigate if and how the breech face mark and firing pin impression change over repeated firings, we used an automated ballistic identification system Evofinder® to study cartridge cases fired from five Chinese Norinco QSZ-92 9×19mm pistols. Each pistol fired 3070 consecutive shots. The first 20 cartridge cases were all introduced into the system. From the 21st until the 3070th shot, every te ...
DOI:
10.1016/j.forsciint.2017.11.035

11. Do we need to replicate in sensory profiling studies?

Author:
Peltier, C.; Mammasse, N.; Visalli, M.; Cordelle, S.; Schlich, P.
Source:
Food quality and preference 2018 v.63 pp. 129-134
ISSN:
0950-3293
Subject:
correlation,   etc   ; data collection; sensory evaluation;     Show all 3 Subjects
Abstract:
... Several evaluations are necessary to test individual repeatability in sensory profiling. But do additional replicates really provide more information than the first evaluation? Statistical analysis of 339 studies with at least two evaluations showed that when using the first evaluation alone: Significance of product discrimination was identical for 6 out of 7 attributes, 85% of the significant att ...
DOI:
10.1016/j.foodqual.2017.09.001

12. Genetic parameter estimates for intermuscular bone in blunt snout bream (Megalobrama amblycephala) based on a microsatellite-based pedigree

Author:
Xiong, Xue-Mei; Robinson, Nicholas Andrew; Zhou, Jia-Jia; Chen, Yu-Long; Wang, Weimin; Wang, Xu-Bo; Gao, Ze-Xia
Source:
Aquaculture 2019 v.502 pp. 371-377
ISSN:
0044-8486
Subject:
genetic correlation; phenotypic correlation,   etc   ; Megalobrama amblycephala; animal models; bones; females; fish; freshwater aquaculture; genetic variation; genotyping; heritability; males; microsatellite repeats; parents; pedigree; progeny; selection methods; China;     Show all 18 Subjects
Abstract:
... Most of the freshwater aquaculture fish species in the world, especially cyprinid fishes, contain intermuscular bones (IBs). IBs are often small and sharp, and they consequently limit how the fish can be processed, cause injury or trauma if lodged in consumers' throat or mouth and therefore affect the appeal of the fish to many consumers. In order to assess the possibility of decreasing IBs counts ...
DOI:
10.1016/j.aquaculture.2018.12.072

13. First insight into the heritable variation and potential response to selection of phototaxis and locomotion behavior associated to the light/dark stimuli in the abalone Haliotis discus hannai

Author:
Defranchi, Yohana D.; Winkler, Federico M.; Farías, William J.; Herbinger, Christophe; Brokordt, Katherina B.
Source:
Aquaculture 2019 v.500 pp. 645-650
ISSN:
0044-8486
Subject:
genetic correlation; phenotypic correlation,   etc   ; Haliotis discus hannai; abalone; energy balance; farming systems; juveniles; locomotion; models; mollusc culture; photoperiod; phototaxis; selection intensity; selection methods;     Show all 14 Subjects
Abstract:
... Abalones are especially susceptible to environmental lighting conditions. This factor greatly affects crucial biological process such as feeding rates, energy balance, physiological stress status, and consequently, growth and survival of farmed abalone. Most of these effects have been studied in the economically valuable abalone Haliotis discus hannai. The use of specific photoperiods, and/or ligh ...
DOI:
10.1016/j.aquaculture.2018.10.065

14. Genetics of bull semen characteristics in a multi-breed cattle population

Author:
Berry, Donagh P.; Eivers, Bernard; Dunne, Grainne; McParland, Sinéad
Source:
Theriogenology 2019 v.123 pp. 202-208
ISSN:
0093-691X
Subject:
genetic correlation; phenotypic correlation,   etc   ; Belgian Blue; Charolais; artificial insemination; breed differences; bulls; cryopreservation; genetic variation; heritability; phenotype; semen quality; sperm concentration; sperm motility; spermatozoa; standard deviation; statistical models;     Show all 17 Subjects
Abstract:
... Little is known of the genetic variability in semen quality traits in cattle and their inter-relationships. The objective of the present study was to estimate genetic parameters for a range of semen quality measures. The data consisted of 35,573 ejaculates from 787 artificial insemination bulls of 16 breeds. Genetic parameters were estimated using a repeatability animal linear mixed model. Large b ...
DOI:
10.1016/j.theriogenology.2018.10.006

15. Bayesian inference on genetic parameters for some reproductive traits in sheep using linear and threshold models

Author:
Yadollahi, Sakine; Gholizadeh, Mohsen; Hafezian, Hasan
Source:
Small ruminant research 2019 v.170 pp. 149-153
ISSN:
0921-4488
Subject:
genetic correlation; phenotypic correlation,   etc   ; Bayesian theory; breeding; computer software; heritability; linear models; litter size; litter weight; reproductive traits; sheep; threshold models; variance; weaning;     Show all 14 Subjects
Abstract:
... Genetic parameters for reproductive traits in Baluchi sheep were estimated on 3844 dams born during 1991 to 2012. The studied traits were litter size at birth (LSB), litter size at weaning (LSW), litter mean weight per lamb born (LMWLB), litter mean weight per lamb weaned (LMWLW), total litter weight at birth (TLWB) and total litter weight at weaning (TLWW). Significant effects were determined usi ...
DOI:
10.1016/j.smallrumres.2018.12.001

16. Direct and maternal variance components and genetic parameters for average daily body weight gain and Kleiber ratios in Nellore sheep

Author:
Illa, Satish Kumar; Gollamoori, Gangaraju; Nath, Sapna
Source:
Tropical animal health and production 2019 v.51 no.1 pp. 155-163
ISSN:
0049-4747
Subject:
genetic correlation; phenotypic correlation,   etc   ; Nellore; animal models; average daily gain; body weight changes; covariance; ewes; feed conversion; heritability; lambing; maternal effect; variance; weaning;     Show all 14 Subjects
Abstract:
... The objective of the present study was to estimate variance components and genetic parameters for average daily gain from birth to weaning (ADGa), birth to 6 months (ADGb) and 3 to 6 months (ADGc) and corresponding Kleiber ratios (Ka, Kb, and Kc) in Nellore sheep. Data were collected from the records maintained at Livestock Research Station, Palamaner, for analysis and the data spread from 1993 to ...
DOI:
10.1007/s11250-018-1670-z

17. Familial resemblances in human plasma metabolites are attributable to both genetic and common environmental effects

Author:
Tremblay, Bénédicte L.; Guénard, Frédéric; Lamarche, Benoît; Pérusse, Louis; Vohl, Marie-Claude
Source:
Nutrition research 2019 v.61 pp. 22-30
ISSN:
0271-5317
Subject:
genetic correlation; phenotypic correlation,   etc   ; Canadians; apolipoprotein B-100; arginine; cholesterol; citrulline; environmental factors; environmental impact; genetic analysis; heritability; human nutrition; lysophosphatidylcholine; metabolites; pathogenesis; risk factors; serotonin; variance;     Show all 18 Subjects
Abstract:
... Metabolites are of great importance for understanding the pathogenesis of several diseases. Understanding the genetic contribution to metabolite concentrations may provide insights into mechanisms of complex diseases. Several studies have investigated heritability of metabolites but none investigated potential influences of genetic and environmental factors on the relationship between metabolites ...
DOI:
10.1016/j.nutres.2018.10.003

18. A novel approach towards investigating the performance of different PVT configurations integrated on test cells: An experimental study

Author:
Tomar, Vivek; Norton, Brian; Tiwari, G.N.
Source:
Renewable energy 2019 v.137 pp. 93-108
ISSN:
0960-1481
Subject:
correlation,   etc   ; air; dusting; glass; mass flow; models; prototypes; renewable energy sources; solar collectors;     Show all 9 Subjects
Abstract:
... This study elaborates the theoretical and experimental analysis for the effectiveness of different photovoltaic thermal (PVT) configurations along with their building implications. An experiment was performed on especially designed four identical prototype test cells emphasise the building integration photovoltaic thermal (BiPVT) systems. A comparative analysis of four different possible PVT confi ...
DOI:
10.1016/j.renene.2017.11.020

19. Multicellular Systems Biology: Quantifying Cellular Patterning and Function in Plant Organs Using Network Science

Author:
Bassel, George W.
Source:
Molecular plant 2019 v.12 no.6 pp. 731-742
ISSN:
1674-2052
Subject:
genotype-phenotype correlation,   etc   ; genes; hypocotyls; mutants; plant organs; structure-activity relationships; tissues; topology;     Show all 8 Subjects
Abstract:
... Organ function is at least partially shaped and constrained by the organization of their constituent cells. Extensive investigation has revealed mechanisms explaining how these patterns are generated, with less being known about their functional relevance. In this paper, a methodology to discretize and quantitatively analyze cellular patterning is described. By performing global organ-scale cellul ...
DOI:
10.1016/j.molp.2019.02.004

20. Genomic basis of delayed reward discounting

Author:
Gray, Joshua C.; Sanchez-Roige, Sandra; de Wit, Harriet; MacKillop, James; Palmer, Abraham A.
Source:
Behavioural processes 2019 v.162 pp. 157-161
ISSN:
0376-6357
Subject:
genetic correlation,   etc   ; cognition; genome-wide association study; genomics; heritability; obesity; rodents; single nucleotide polymorphism;     Show all 8 Subjects
Abstract:
... Delayed reward discounting (DRD) is a behavioral economic measure of impulsivity, reflecting how rapidly a reward loses value based on its temporal distance. In humans, more impulsive DRD is associated with susceptibility to a number of psychiatric diseases (e.g., addiction, ADHD), health outcomes (e.g., obesity), and lifetime outcomes (e.g., educational attainment). Although the determinants of D ...
DOI:
10.1016/j.beproc.2019.03.006